Finding the Third Proportional to 662,578 and 898,367.50

Step by Step Solution

1. Step 1: Write the proportion equation
   662,578 : 898,367.50 = 898,367.50 : x
2. Step 2: Convert to fraction form
   662,578/898,367.50 = 898,367.50/x
3. Step 3: Cross multiply
   662,578x = 898,367.50 × 898,367.50
4. Step 4: Simplify right side
   662,578x = 807,064,165,056.25
5. Step 5: Solve for x
   x = 807,064,165,056.25/662,578
6. Step 6: Final answer
   x = 1,218,066.65