Finding the Third Proportional to 9,407,402 and 19,945,208

Step by Step Solution

1. Step 1: Write the proportion equation
   9,407,402 : 19,945,208 = 19,945,208 : x
2. Step 2: Convert to fraction form
   9,407,402/19,945,208 = 19,945,208/x
3. Step 3: Cross multiply
   9,407,402x = 19,945,208 × 19,945,208
4. Step 4: Simplify right side
   9,407,402x = 397,811,322,163,264
5. Step 5: Solve for x
   x = 397,811,322,163,264/9,407,402
6. Step 6: Final answer
   x = 42,287,054.62