Finding the Third Proportional to 129,981 and 270,154.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,981 : 270,154.50 = 270,154.50 : x
2. Step 2: Convert to fraction form
   129,981/270,154.50 = 270,154.50/x
3. Step 3: Cross multiply
   129,981x = 270,154.50 × 270,154.50
4. Step 4: Simplify right side
   129,981x = 72,983,453,870.25
5. Step 5: Solve for x
   x = 72,983,453,870.25/129,981
6. Step 6: Final answer
   x = 561,493.25