Finding the Third Proportional to 105,172.50 and 228,090

Step by Step Solution

1. Step 1: Write the proportion equation
   105,172.50 : 228,090 = 228,090 : x
2. Step 2: Convert to fraction form
   105,172.50/228,090 = 228,090/x
3. Step 3: Cross multiply
   105,172.50x = 228,090 × 228,090
4. Step 4: Simplify right side
   105,172.50x = 52,025,048,100
5. Step 5: Solve for x
   x = 52,025,048,100/105,172.50
6. Step 6: Final answer
   x = 494,663.99