Finding the Third Proportional to 148,909.50 and 324,585

Step by Step Solution

1. Step 1: Write the proportion equation
   148,909.50 : 324,585 = 324,585 : x
2. Step 2: Convert to fraction form
   148,909.50/324,585 = 324,585/x
3. Step 3: Cross multiply
   148,909.50x = 324,585 × 324,585
4. Step 4: Simplify right side
   148,909.50x = 105,355,422,225
5. Step 5: Solve for x
   x = 105,355,422,225/148,909.50
6. Step 6: Final answer
   x = 707,513.10