Finding the Third Proportional to 424,221 and 914,860.50

Step by Step Solution

1. Step 1: Write the proportion equation
   424,221 : 914,860.50 = 914,860.50 : x
2. Step 2: Convert to fraction form
   424,221/914,860.50 = 914,860.50/x
3. Step 3: Cross multiply
   424,221x = 914,860.50 × 914,860.50
4. Step 4: Simplify right side
   424,221x = 836,969,734,460.25
5. Step 5: Solve for x
   x = 836,969,734,460.25/424,221
6. Step 6: Final answer
   x = 1,972,956.87