Finding the Third Proportional to 78,797 and 175,090

Step by Step Solution

1. Step 1: Write the proportion equation
   78,797 : 175,090 = 175,090 : x
2. Step 2: Convert to fraction form
   78,797/175,090 = 175,090/x
3. Step 3: Cross multiply
   78,797x = 175,090 × 175,090
4. Step 4: Simplify right side
   78,797x = 30,656,508,100
5. Step 5: Solve for x
   x = 30,656,508,100/78,797
6. Step 6: Final answer
   x = 389,056.79