Finding the Third Proportional to 42,986,394 and 90,824,688

Step by Step Solution

1. Step 1: Write the proportion equation
   42,986,394 : 90,824,688 = 90,824,688 : x
2. Step 2: Convert to fraction form
   42,986,394/90,824,688 = 90,824,688/x
3. Step 3: Cross multiply
   42,986,394x = 90,824,688 × 90,824,688
4. Step 4: Simplify right side
   42,986,394x = 8,249,123,950,297,344
5. Step 5: Solve for x
   x = 8,249,123,950,297,344/42,986,394
6. Step 6: Final answer
   x = 191,900,812.85