Finding the Third Proportional to 69,949.69 and 149,872.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,949.69 : 149,872.50 = 149,872.50 : x
2. Step 2: Convert to fraction form
   69,949.69/149,872.50 = 149,872.50/x
3. Step 3: Cross multiply
   69,949.69x = 149,872.50 × 149,872.50
4. Step 4: Simplify right side
   69,949.69x = 22,461,766,256.25
5. Step 5: Solve for x
   x = 22,461,766,256.25/69,949.69
6. Step 6: Final answer
   x = 321,113.18