Finding the Third Proportional to 577,480 and 1,259,780

Step by Step Solution

1. Step 1: Write the proportion equation
   577,480 : 1,259,780 = 1,259,780 : x
2. Step 2: Convert to fraction form
   577,480/1,259,780 = 1,259,780/x
3. Step 3: Cross multiply
   577,480x = 1,259,780 × 1,259,780
4. Step 4: Simplify right side
   577,480x = 1,587,045,648,400
5. Step 5: Solve for x
   x = 1,587,045,648,400/577,480
6. Step 6: Final answer
   x = 2,748,226.17