Finding the Third Proportional to 112,867.50 and 266,422.50

Step by Step Solution

1. Step 1: Write the proportion equation
   112,867.50 : 266,422.50 = 266,422.50 : x
2. Step 2: Convert to fraction form
   112,867.50/266,422.50 = 266,422.50/x
3. Step 3: Cross multiply
   112,867.50x = 266,422.50 × 266,422.50
4. Step 4: Simplify right side
   112,867.50x = 70,980,948,506.25
5. Step 5: Solve for x
   x = 70,980,948,506.25/112,867.50
6. Step 6: Final answer
   x = 628,887.40