Finding the Third Proportional to 171,981 and 260,572.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,981 : 260,572.50 = 260,572.50 : x
2. Step 2: Convert to fraction form
   171,981/260,572.50 = 260,572.50/x
3. Step 3: Cross multiply
   171,981x = 260,572.50 × 260,572.50
4. Step 4: Simplify right side
   171,981x = 67,898,027,756.25
5. Step 5: Solve for x
   x = 67,898,027,756.25/171,981
6. Step 6: Final answer
   x = 394,799.59