Finding the Third Proportional to 34,080 and 69,859.50

Step by Step Solution

1. Step 1: Write the proportion equation
   34,080 : 69,859.50 = 69,859.50 : x
2. Step 2: Convert to fraction form
   34,080/69,859.50 = 69,859.50/x
3. Step 3: Cross multiply
   34,080x = 69,859.50 × 69,859.50
4. Step 4: Simplify right side
   34,080x = 4,880,349,740.25
5. Step 5: Solve for x
   x = 4,880,349,740.25/34,080
6. Step 6: Final answer
   x = 143,202.75