Finding the Third Proportional to 620,779.50 and 949,221

Step by Step Solution

1. Step 1: Write the proportion equation
   620,779.50 : 949,221 = 949,221 : x
2. Step 2: Convert to fraction form
   620,779.50/949,221 = 949,221/x
3. Step 3: Cross multiply
   620,779.50x = 949,221 × 949,221
4. Step 4: Simplify right side
   620,779.50x = 901,020,506,841
5. Step 5: Solve for x
   x = 901,020,506,841/620,779.50
6. Step 6: Final answer
   x = 1,451,434.05