Finding the Third Proportional to 287,224.50 and 402,492

Step by Step Solution

1. Step 1: Write the proportion equation
   287,224.50 : 402,492 = 402,492 : x
2. Step 2: Convert to fraction form
   287,224.50/402,492 = 402,492/x
3. Step 3: Cross multiply
   287,224.50x = 402,492 × 402,492
4. Step 4: Simplify right side
   287,224.50x = 161,999,810,064
5. Step 5: Solve for x
   x = 161,999,810,064/287,224.50
6. Step 6: Final answer
   x = 564,018.08