Finding the Third Proportional to 284,289 and 612,862.50

Step by Step Solution

1. Step 1: Write the proportion equation
   284,289 : 612,862.50 = 612,862.50 : x
2. Step 2: Convert to fraction form
   284,289/612,862.50 = 612,862.50/x
3. Step 3: Cross multiply
   284,289x = 612,862.50 × 612,862.50
4. Step 4: Simplify right side
   284,289x = 375,600,443,906.25
5. Step 5: Solve for x
   x = 375,600,443,906.25/284,289
6. Step 6: Final answer
   x = 1,321,192.32