Finding the Third Proportional to 121,572 and 195,331.50

Step by Step Solution

1. Step 1: Write the proportion equation
   121,572 : 195,331.50 = 195,331.50 : x
2. Step 2: Convert to fraction form
   121,572/195,331.50 = 195,331.50/x
3. Step 3: Cross multiply
   121,572x = 195,331.50 × 195,331.50
4. Step 4: Simplify right side
   121,572x = 38,154,394,892.25
5. Step 5: Solve for x
   x = 38,154,394,892.25/121,572
6. Step 6: Final answer
   x = 313,841.96