Finding the Third Proportional to 4,157,472 and 9,109,392

Step by Step Solution

1. Step 1: Write the proportion equation
   4,157,472 : 9,109,392 = 9,109,392 : x
2. Step 2: Convert to fraction form
   4,157,472/9,109,392 = 9,109,392/x
3. Step 3: Cross multiply
   4,157,472x = 9,109,392 × 9,109,392
4. Step 4: Simplify right side
   4,157,472x = 82,981,022,609,664
5. Step 5: Solve for x
   x = 82,981,022,609,664/4,157,472
6. Step 6: Final answer
   x = 19,959,490.43