Finding the Third Proportional to 284,883 and 442,864.50

Step by Step Solution

1. Step 1: Write the proportion equation
   284,883 : 442,864.50 = 442,864.50 : x
2. Step 2: Convert to fraction form
   284,883/442,864.50 = 442,864.50/x
3. Step 3: Cross multiply
   284,883x = 442,864.50 × 442,864.50
4. Step 4: Simplify right side
   284,883x = 196,128,965,360.25
5. Step 5: Solve for x
   x = 196,128,965,360.25/284,883
6. Step 6: Final answer
   x = 688,454.44