Finding the Third Proportional to 424,920 and 912,997.50

Step by Step Solution

1. Step 1: Write the proportion equation
   424,920 : 912,997.50 = 912,997.50 : x
2. Step 2: Convert to fraction form
   424,920/912,997.50 = 912,997.50/x
3. Step 3: Cross multiply
   424,920x = 912,997.50 × 912,997.50
4. Step 4: Simplify right side
   424,920x = 833,564,435,006.25
5. Step 5: Solve for x
   x = 833,564,435,006.25/424,920
6. Step 6: Final answer
   x = 1,961,697.34