Finding the Third Proportional to 811,500 and 1,261,550

Step by Step Solution

1. Step 1: Write the proportion equation
   811,500 : 1,261,550 = 1,261,550 : x
2. Step 2: Convert to fraction form
   811,500/1,261,550 = 1,261,550/x
3. Step 3: Cross multiply
   811,500x = 1,261,550 × 1,261,550
4. Step 4: Simplify right side
   811,500x = 1,591,508,402,500
5. Step 5: Solve for x
   x = 1,591,508,402,500/811,500
6. Step 6: Final answer
   x = 1,961,193.35