Finding the Third Proportional to 478,356 and 1,025,400

Step by Step Solution

1. Step 1: Write the proportion equation
   478,356 : 1,025,400 = 1,025,400 : x
2. Step 2: Convert to fraction form
   478,356/1,025,400 = 1,025,400/x
3. Step 3: Cross multiply
   478,356x = 1,025,400 × 1,025,400
4. Step 4: Simplify right side
   478,356x = 1,051,445,160,000
5. Step 5: Solve for x
   x = 1,051,445,160,000/478,356
6. Step 6: Final answer
   x = 2,198,039.03