Finding the Third Proportional to 420,843 and 652,975.50

Step by Step Solution

1. Step 1: Write the proportion equation
   420,843 : 652,975.50 = 652,975.50 : x
2. Step 2: Convert to fraction form
   420,843/652,975.50 = 652,975.50/x
3. Step 3: Cross multiply
   420,843x = 652,975.50 × 652,975.50
4. Step 4: Simplify right side
   420,843x = 426,377,003,600.25
5. Step 5: Solve for x
   x = 426,377,003,600.25/420,843
6. Step 6: Final answer
   x = 1,013,149.81