Finding the Third Proportional to 144,090 and 231,513.75

Step by Step Solution

1. Step 1: Write the proportion equation
   144,090 : 231,513.75 = 231,513.75 : x
2. Step 2: Convert to fraction form
   144,090/231,513.75 = 231,513.75/x
3. Step 3: Cross multiply
   144,090x = 231,513.75 × 231,513.75
4. Step 4: Simplify right side
   144,090x = 53,598,616,439.06
5. Step 5: Solve for x
   x = 53,598,616,439.06/144,090
6. Step 6: Final answer
   x = 371,980.13