Finding the Third Proportional to 913.50 and 2,156.06

Step by Step Solution

1. Step 1: Write the proportion equation
   913.50 : 2,156.06 = 2,156.06 : x
2. Step 2: Convert to fraction form
   913.50/2,156.06 = 2,156.06/x
3. Step 3: Cross multiply
   913.50x = 2,156.06 × 2,156.06
4. Step 4: Simplify right side
   913.50x = 4,648,605.50
5. Step 5: Solve for x
   x = 4,648,605.50/913.50
6. Step 6: Final answer
   x = 5,088.79