Finding the Third Proportional to 69,400.50 and 149,836.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,400.50 : 149,836.50 = 149,836.50 : x
2. Step 2: Convert to fraction form
   69,400.50/149,836.50 = 149,836.50/x
3. Step 3: Cross multiply
   69,400.50x = 149,836.50 × 149,836.50
4. Step 4: Simplify right side
   69,400.50x = 22,450,976,732.25
5. Step 5: Solve for x
   x = 22,450,976,732.25/69,400.50
6. Step 6: Final answer
   x = 323,498.77