Finding the Third Proportional to 78,485.50 and 170,007

Step by Step Solution

1. Step 1: Write the proportion equation
   78,485.50 : 170,007 = 170,007 : x
2. Step 2: Convert to fraction form
   78,485.50/170,007 = 170,007/x
3. Step 3: Cross multiply
   78,485.50x = 170,007 × 170,007
4. Step 4: Simplify right side
   78,485.50x = 28,902,380,049
5. Step 5: Solve for x
   x = 28,902,380,049/78,485.50
6. Step 6: Final answer
   x = 368,251.21