Finding the Third Proportional to 28,387,865 and 42,534,401

Step by Step Solution

1. Step 1: Write the proportion equation
   28,387,865 : 42,534,401 = 42,534,401 : x
2. Step 2: Convert to fraction form
   28,387,865/42,534,401 = 42,534,401/x
3. Step 3: Cross multiply
   28,387,865x = 42,534,401 × 42,534,401
4. Step 4: Simplify right side
   28,387,865x = 1,809,175,268,428,801
5. Step 5: Solve for x
   x = 1,809,175,268,428,801/28,387,865
6. Step 6: Final answer
   x = 63,730,585.88