Finding the Third Proportional to 655,040 and 1,420,672

Step by Step Solution

1. Step 1: Write the proportion equation
   655,040 : 1,420,672 = 1,420,672 : x
2. Step 2: Convert to fraction form
   655,040/1,420,672 = 1,420,672/x
3. Step 3: Cross multiply
   655,040x = 1,420,672 × 1,420,672
4. Step 4: Simplify right side
   655,040x = 2,018,308,931,584
5. Step 5: Solve for x
   x = 2,018,308,931,584/655,040
6. Step 6: Final answer
   x = 3,081,199.52