Finding the Third Proportional to 113,521.50 and 243,342.56

Step by Step Solution

1. Step 1: Write the proportion equation
   113,521.50 : 243,342.56 = 243,342.56 : x
2. Step 2: Convert to fraction form
   113,521.50/243,342.56 = 243,342.56/x
3. Step 3: Cross multiply
   113,521.50x = 243,342.56 × 243,342.56
4. Step 4: Simplify right side
   113,521.50x = 59,215,602,724.07
5. Step 5: Solve for x
   x = 59,215,602,724.07/113,521.50
6. Step 6: Final answer
   x = 521,624.56