Finding the Third Proportional to 111,900.55 and 228,971.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,900.55 : 228,971.50 = 228,971.50 : x
2. Step 2: Convert to fraction form
   111,900.55/228,971.50 = 228,971.50/x
3. Step 3: Cross multiply
   111,900.55x = 228,971.50 × 228,971.50
4. Step 4: Simplify right side
   111,900.55x = 52,427,946,023.41
5. Step 5: Solve for x
   x = 52,427,946,023.41/111,900.55
6. Step 6: Final answer
   x = 468,522.68