Finding the Third Proportional to 612,748 and 898,520.75

Step by Step Solution

1. Step 1: Write the proportion equation
   612,748 : 898,520.75 = 898,520.75 : x
2. Step 2: Convert to fraction form
   612,748/898,520.75 = 898,520.75/x
3. Step 3: Cross multiply
   612,748x = 898,520.75 × 898,520.75
4. Step 4: Simplify right side
   612,748x = 807,339,538,180.56
5. Step 5: Solve for x
   x = 807,339,538,180.56/612,748
6. Step 6: Final answer
   x = 1,317,571.89