Finding the Third Proportional to 9,407,430 and 19,945,264

Step by Step Solution

1. Step 1: Write the proportion equation
   9,407,430 : 19,945,264 = 19,945,264 : x
2. Step 2: Convert to fraction form
   9,407,430/19,945,264 = 19,945,264/x
3. Step 3: Cross multiply
   9,407,430x = 19,945,264 × 19,945,264
4. Step 4: Simplify right side
   9,407,430x = 397,813,556,029,696
5. Step 5: Solve for x
   x = 397,813,556,029,696/9,407,430
6. Step 6: Final answer
   x = 42,287,166.21