Finding the Third Proportional to 100,243 and 216,156.50

Step by Step Solution

1. Step 1: Write the proportion equation
   100,243 : 216,156.50 = 216,156.50 : x
2. Step 2: Convert to fraction form
   100,243/216,156.50 = 216,156.50/x
3. Step 3: Cross multiply
   100,243x = 216,156.50 × 216,156.50
4. Step 4: Simplify right side
   100,243x = 46,723,632,492.25
5. Step 5: Solve for x
   x = 46,723,632,492.25/100,243
6. Step 6: Final answer
   x = 466,103.69