Finding the Third Proportional to 28,071,860 and 42,315,156

Step by Step Solution

1. Step 1: Write the proportion equation
   28,071,860 : 42,315,156 = 42,315,156 : x
2. Step 2: Convert to fraction form
   28,071,860/42,315,156 = 42,315,156/x
3. Step 3: Cross multiply
   28,071,860x = 42,315,156 × 42,315,156
4. Step 4: Simplify right side
   28,071,860x = 1,790,572,427,304,336
5. Step 5: Solve for x
   x = 1,790,572,427,304,336/28,071,860
6. Step 6: Final answer
   x = 63,785,314.81