Finding the Third Proportional to 89,820 and 149,691.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,820 : 149,691.50 = 149,691.50 : x
2. Step 2: Convert to fraction form
   89,820/149,691.50 = 149,691.50/x
3. Step 3: Cross multiply
   89,820x = 149,691.50 × 149,691.50
4. Step 4: Simplify right side
   89,820x = 22,407,545,172.25
5. Step 5: Solve for x
   x = 22,407,545,172.25/89,820
6. Step 6: Final answer
   x = 249,471.67