Finding the Third Proportional to 220,562 and 478,468

Step by Step Solution

1. Step 1: Write the proportion equation
   220,562 : 478,468 = 478,468 : x
2. Step 2: Convert to fraction form
   220,562/478,468 = 478,468/x
3. Step 3: Cross multiply
   220,562x = 478,468 × 478,468
4. Step 4: Simplify right side
   220,562x = 228,931,627,024
5. Step 5: Solve for x
   x = 228,931,627,024/220,562
6. Step 6: Final answer
   x = 1,037,946.82