Finding the Third Proportional to 9,407,440 and 19,945,284

Step by Step Solution

1. Step 1: Write the proportion equation
   9,407,440 : 19,945,284 = 19,945,284 : x
2. Step 2: Convert to fraction form
   9,407,440/19,945,284 = 19,945,284/x
3. Step 3: Cross multiply
   9,407,440x = 19,945,284 × 19,945,284
4. Step 4: Simplify right side
   9,407,440x = 397,814,353,840,656
5. Step 5: Solve for x
   x = 397,814,353,840,656/9,407,440
6. Step 6: Final answer
   x = 42,287,206.07