Finding the Third Proportional to 660,912 and 1,050,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   660,912 : 1,050,418.50 = 1,050,418.50 : x
2. Step 2: Convert to fraction form
   660,912/1,050,418.50 = 1,050,418.50/x
3. Step 3: Cross multiply
   660,912x = 1,050,418.50 × 1,050,418.50
4. Step 4: Simplify right side
   660,912x = 1,103,379,025,142.25
5. Step 5: Solve for x
   x = 1,103,379,025,142.25/660,912
6. Step 6: Final answer
   x = 1,669,479.48