Finding the Third Proportional to 287,457.50 and 604,703

Step by Step Solution

1. Step 1: Write the proportion equation
   287,457.50 : 604,703 = 604,703 : x
2. Step 2: Convert to fraction form
   287,457.50/604,703 = 604,703/x
3. Step 3: Cross multiply
   287,457.50x = 604,703 × 604,703
4. Step 4: Simplify right side
   287,457.50x = 365,665,718,209
5. Step 5: Solve for x
   x = 365,665,718,209/287,457.50
6. Step 6: Final answer
   x = 1,272,068.80