Finding the Third Proportional to 9,407,464 and 19,945,322

Step by Step Solution

1. Step 1: Write the proportion equation
   9,407,464 : 19,945,322 = 19,945,322 : x
2. Step 2: Convert to fraction form
   9,407,464/19,945,322 = 19,945,322/x
3. Step 3: Cross multiply
   9,407,464x = 19,945,322 × 19,945,322
4. Step 4: Simplify right side
   9,407,464x = 397,815,869,683,684
5. Step 5: Solve for x
   x = 397,815,869,683,684/9,407,464
6. Step 6: Final answer
   x = 42,287,259.32