Finding the Third Proportional to 550,992 and 851,422.50

Step by Step Solution

1. Step 1: Write the proportion equation
   550,992 : 851,422.50 = 851,422.50 : x
2. Step 2: Convert to fraction form
   550,992/851,422.50 = 851,422.50/x
3. Step 3: Cross multiply
   550,992x = 851,422.50 × 851,422.50
4. Step 4: Simplify right side
   550,992x = 724,920,273,506.25
5. Step 5: Solve for x
   x = 724,920,273,506.25/550,992
6. Step 6: Final answer
   x = 1,315,663.88