Finding the Third Proportional to 61,490.25 and 133,429.50

Step by Step Solution

1. Step 1: Write the proportion equation
   61,490.25 : 133,429.50 = 133,429.50 : x
2. Step 2: Convert to fraction form
   61,490.25/133,429.50 = 133,429.50/x
3. Step 3: Cross multiply
   61,490.25x = 133,429.50 × 133,429.50
4. Step 4: Simplify right side
   61,490.25x = 17,803,431,470.25
5. Step 5: Solve for x
   x = 17,803,431,470.25/61,490.25
6. Step 6: Final answer
   x = 289,532.59