Finding the Third Proportional to 551,050 and 851,129.50

Step by Step Solution

1. Step 1: Write the proportion equation
   551,050 : 851,129.50 = 851,129.50 : x
2. Step 2: Convert to fraction form
   551,050/851,129.50 = 851,129.50/x
3. Step 3: Cross multiply
   551,050x = 851,129.50 × 851,129.50
4. Step 4: Simplify right side
   551,050x = 724,421,425,770.25
5. Step 5: Solve for x
   x = 724,421,425,770.25/551,050
6. Step 6: Final answer
   x = 1,314,620.14