Finding the Third Proportional to 113,521 and 243,342

Step by Step Solution

1. Step 1: Write the proportion equation
   113,521 : 243,342 = 243,342 : x
2. Step 2: Convert to fraction form
   113,521/243,342 = 243,342/x
3. Step 3: Cross multiply
   113,521x = 243,342 × 243,342
4. Step 4: Simplify right side
   113,521x = 59,215,328,964
5. Step 5: Solve for x
   x = 59,215,328,964/113,521
6. Step 6: Final answer
   x = 521,624.45