Finding the Third Proportional to 903.50 and 2,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   903.50 : 2,147.50 = 2,147.50 : x
2. Step 2: Convert to fraction form
   903.50/2,147.50 = 2,147.50/x
3. Step 3: Cross multiply
   903.50x = 2,147.50 × 2,147.50
4. Step 4: Simplify right side
   903.50x = 4,611,756.25
5. Step 5: Solve for x
   x = 4,611,756.25/903.50
6. Step 6: Final answer
   x = 5,104.32