Finding the Third Proportional to 66,892.50 and 143,123.63

Step by Step Solution

1. Step 1: Write the proportion equation
   66,892.50 : 143,123.63 = 143,123.63 : x
2. Step 2: Convert to fraction form
   66,892.50/143,123.63 = 143,123.63/x
3. Step 3: Cross multiply
   66,892.50x = 143,123.63 × 143,123.63
4. Step 4: Simplify right side
   66,892.50x = 20,484,372,033.14
5. Step 5: Solve for x
   x = 20,484,372,033.14/66,892.50
6. Step 6: Final answer
   x = 306,228.23