Finding the Third Proportional to 9,407,416 and 19,945,240

Step by Step Solution

1. Step 1: Write the proportion equation
   9,407,416 : 19,945,240 = 19,945,240 : x
2. Step 2: Convert to fraction form
   9,407,416/19,945,240 = 19,945,240/x
3. Step 3: Cross multiply
   9,407,416x = 19,945,240 × 19,945,240
4. Step 4: Simplify right side
   9,407,416x = 397,812,598,657,600
5. Step 5: Solve for x
   x = 397,812,598,657,600/9,407,416
6. Step 6: Final answer
   x = 42,287,127.37