Finding the Third Proportional to 1,088,720 and 1,423,120

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088,720 : 1,423,120 = 1,423,120 : x
2. Step 2: Convert to fraction form
   1,088,720/1,423,120 = 1,423,120/x
3. Step 3: Cross multiply
   1,088,720x = 1,423,120 × 1,423,120
4. Step 4: Simplify right side
   1,088,720x = 2,025,270,534,400
5. Step 5: Solve for x
   x = 2,025,270,534,400/1,088,720
6. Step 6: Final answer
   x = 1,860,230.85