Finding the Third Proportional to 1,316,128 and 1,983,920

Step by Step Solution

1. Step 1: Write the proportion equation
   1,316,128 : 1,983,920 = 1,983,920 : x
2. Step 2: Convert to fraction form
   1,316,128/1,983,920 = 1,983,920/x
3. Step 3: Cross multiply
   1,316,128x = 1,983,920 × 1,983,920
4. Step 4: Simplify right side
   1,316,128x = 3,935,938,566,400
5. Step 5: Solve for x
   x = 3,935,938,566,400/1,316,128
6. Step 6: Final answer
   x = 2,990,543.90