Finding the Third Proportional to 420,837 and 652,966.50

Step by Step Solution

1. Step 1: Write the proportion equation
   420,837 : 652,966.50 = 652,966.50 : x
2. Step 2: Convert to fraction form
   420,837/652,966.50 = 652,966.50/x
3. Step 3: Cross multiply
   420,837x = 652,966.50 × 652,966.50
4. Step 4: Simplify right side
   420,837x = 426,365,250,122.25
5. Step 5: Solve for x
   x = 426,365,250,122.25/420,837
6. Step 6: Final answer
   x = 1,013,136.32