Finding the Third Proportional to 9,139,782 and 19,852,909.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139,782 : 19,852,909.50 = 19,852,909.50 : x
2. Step 2: Convert to fraction form
   9,139,782/19,852,909.50 = 19,852,909.50/x
3. Step 3: Cross multiply
   9,139,782x = 19,852,909.50 × 19,852,909.50
4. Step 4: Simplify right side
   9,139,782x = 394,138,015,615,190.25
5. Step 5: Solve for x
   x = 394,138,015,615,190.25/9,139,782
6. Step 6: Final answer
   x = 43,123,349.73