Finding the Third Proportional to 657,619.50 and 990,774

Step by Step Solution

1. Step 1: Write the proportion equation
   657,619.50 : 990,774 = 990,774 : x
2. Step 2: Convert to fraction form
   657,619.50/990,774 = 990,774/x
3. Step 3: Cross multiply
   657,619.50x = 990,774 × 990,774
4. Step 4: Simplify right side
   657,619.50x = 981,633,119,076
5. Step 5: Solve for x
   x = 981,633,119,076/657,619.50
6. Step 6: Final answer
   x = 1,492,706.83