Finding the Third Proportional to 284,881 and 442,861.50

Step by Step Solution

1. Step 1: Write the proportion equation
   284,881 : 442,861.50 = 442,861.50 : x
2. Step 2: Convert to fraction form
   284,881/442,861.50 = 442,861.50/x
3. Step 3: Cross multiply
   284,881x = 442,861.50 × 442,861.50
4. Step 4: Simplify right side
   284,881x = 196,126,308,182.25
5. Step 5: Solve for x
   x = 196,126,308,182.25/284,881
6. Step 6: Final answer
   x = 688,449.94