Finding the Third Proportional to 118,418 and 243,532

Step by Step Solution

1. Step 1: Write the proportion equation
   118,418 : 243,532 = 243,532 : x
2. Step 2: Convert to fraction form
   118,418/243,532 = 243,532/x
3. Step 3: Cross multiply
   118,418x = 243,532 × 243,532
4. Step 4: Simplify right side
   118,418x = 59,307,835,024
5. Step 5: Solve for x
   x = 59,307,835,024/118,418
6. Step 6: Final answer
   x = 500,834.63