Finding the Third Proportional to 109,521 and 242,817.50

Step by Step Solution

1. Step 1: Write the proportion equation
   109,521 : 242,817.50 = 242,817.50 : x
2. Step 2: Convert to fraction form
   109,521/242,817.50 = 242,817.50/x
3. Step 3: Cross multiply
   109,521x = 242,817.50 × 242,817.50
4. Step 4: Simplify right side
   109,521x = 58,960,338,306.25
5. Step 5: Solve for x
   x = 58,960,338,306.25/109,521
6. Step 6: Final answer
   x = 538,347.33