Finding the Third Proportional to 488,470 and 1,029,420

Step by Step Solution

1. Step 1: Write the proportion equation
   488,470 : 1,029,420 = 1,029,420 : x
2. Step 2: Convert to fraction form
   488,470/1,029,420 = 1,029,420/x
3. Step 3: Cross multiply
   488,470x = 1,029,420 × 1,029,420
4. Step 4: Simplify right side
   488,470x = 1,059,705,536,400
5. Step 5: Solve for x
   x = 1,059,705,536,400/488,470
6. Step 6: Final answer
   x = 2,169,438.32