Finding the Third Proportional to 72,477 and 153,090

Step by Step Solution

1. Step 1: Write the proportion equation
   72,477 : 153,090 = 153,090 : x
2. Step 2: Convert to fraction form
   72,477/153,090 = 153,090/x
3. Step 3: Cross multiply
   72,477x = 153,090 × 153,090
4. Step 4: Simplify right side
   72,477x = 23,436,548,100
5. Step 5: Solve for x
   x = 23,436,548,100/72,477
6. Step 6: Final answer
   x = 323,365.32