Finding the Third Proportional to 123,402,155,408 and 173,777,427,648

Step by Step Solution

1. Step 1: Write the proportion equation
   123,402,155,408 : 173,777,427,648 = 173,777,427,648 : x
2. Step 2: Convert to fraction form
   123,402,155,408/173,777,427,648 = 173,777,427,648/x
3. Step 3: Cross multiply
   123,402,155,408x = 173,777,427,648 × 173,777,427,648
4. Step 4: Simplify right side
   123,402,155,408x = 30,198,594,359,955,875,168,256
5. Step 5: Solve for x
   x = 30,198,594,359,955,875,168,256/123,402,155,408
6. Step 6: Final answer
   x = 244,716,911,630.20