Finding the Third Proportional to 578,370 and 1,253,280

Step by Step Solution

1. Step 1: Write the proportion equation
   578,370 : 1,253,280 = 1,253,280 : x
2. Step 2: Convert to fraction form
   578,370/1,253,280 = 1,253,280/x
3. Step 3: Cross multiply
   578,370x = 1,253,280 × 1,253,280
4. Step 4: Simplify right side
   578,370x = 1,570,710,758,400
5. Step 5: Solve for x
   x = 1,570,710,758,400/578,370
6. Step 6: Final answer
   x = 2,715,754.20