Finding the Third Proportional to 2,125,778 and 3,158,386

Step by Step Solution

1. Step 1: Write the proportion equation
   2,125,778 : 3,158,386 = 3,158,386 : x
2. Step 2: Convert to fraction form
   2,125,778/3,158,386 = 3,158,386/x
3. Step 3: Cross multiply
   2,125,778x = 3,158,386 × 3,158,386
4. Step 4: Simplify right side
   2,125,778x = 9,975,402,124,996
5. Step 5: Solve for x
   x = 9,975,402,124,996/2,125,778
6. Step 6: Final answer
   x = 4,692,588.84