Finding the Third Proportional to 69,123.38 and 146,346.75

Step by Step Solution

1. Step 1: Write the proportion equation
   69,123.38 : 146,346.75 = 146,346.75 : x
2. Step 2: Convert to fraction form
   69,123.38/146,346.75 = 146,346.75/x
3. Step 3: Cross multiply
   69,123.38x = 146,346.75 × 146,346.75
4. Step 4: Simplify right side
   69,123.38x = 21,417,371,235.56
5. Step 5: Solve for x
   x = 21,417,371,235.56/69,123.38
6. Step 6: Final answer
   x = 309,842.67