Finding the Third Proportional to 123,402,155,293 and 173,777,427,511

Step by Step Solution

1. Step 1: Write the proportion equation
   123,402,155,293 : 173,777,427,511 = 173,777,427,511 : x
2. Step 2: Convert to fraction form
   123,402,155,293/173,777,427,511 = 173,777,427,511/x
3. Step 3: Cross multiply
   123,402,155,293x = 173,777,427,511 × 173,777,427,511
4. Step 4: Simplify right side
   123,402,155,293x = 30,198,594,312,340,861,091,840
5. Step 5: Solve for x
   x = 30,198,594,312,340,861,091,840/123,402,155,293
6. Step 6: Final answer
   x = 244,716,911,472.40