Finding the Third Proportional to 69,921 and 152,257.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,921 : 152,257.50 = 152,257.50 : x
2. Step 2: Convert to fraction form
   69,921/152,257.50 = 152,257.50/x
3. Step 3: Cross multiply
   69,921x = 152,257.50 × 152,257.50
4. Step 4: Simplify right side
   69,921x = 23,182,346,306.25
5. Step 5: Solve for x
   x = 23,182,346,306.25/69,921
6. Step 6: Final answer
   x = 331,550.55