Finding the Third Proportional to 931.50 and 2,070.56

Step by Step Solution

1. Step 1: Write the proportion equation
   931.50 : 2,070.56 = 2,070.56 : x
2. Step 2: Convert to fraction form
   931.50/2,070.56 = 2,070.56/x
3. Step 3: Cross multiply
   931.50x = 2,070.56 × 2,070.56
4. Step 4: Simplify right side
   931.50x = 4,287,229.07
5. Step 5: Solve for x
   x = 4,287,229.07/931.50
6. Step 6: Final answer
   x = 4,602.50