Finding the Third Proportional to 175,090 and 254,978

Step by Step Solution

1. Step 1: Write the proportion equation
   175,090 : 254,978 = 254,978 : x
2. Step 2: Convert to fraction form
   175,090/254,978 = 254,978/x
3. Step 3: Cross multiply
   175,090x = 254,978 × 254,978
4. Step 4: Simplify right side
   175,090x = 65,013,780,484
5. Step 5: Solve for x
   x = 65,013,780,484/175,090
6. Step 6: Final answer
   x = 371,316.35