Finding the Third Proportional to 9,407,430 and 19,945,269

Step by Step Solution

1. Step 1: Write the proportion equation
   9,407,430 : 19,945,269 = 19,945,269 : x
2. Step 2: Convert to fraction form
   9,407,430/19,945,269 = 19,945,269/x
3. Step 3: Cross multiply
   9,407,430x = 19,945,269 × 19,945,269
4. Step 4: Simplify right side
   9,407,430x = 397,813,755,482,361
5. Step 5: Solve for x
   x = 397,813,755,482,361/9,407,430
6. Step 6: Final answer
   x = 42,287,187.41