Finding the Third Proportional to 69,307.50 and 145,860

Step by Step Solution

1. Step 1: Write the proportion equation
   69,307.50 : 145,860 = 145,860 : x
2. Step 2: Convert to fraction form
   69,307.50/145,860 = 145,860/x
3. Step 3: Cross multiply
   69,307.50x = 145,860 × 145,860
4. Step 4: Simplify right side
   69,307.50x = 21,275,139,600
5. Step 5: Solve for x
   x = 21,275,139,600/69,307.50
6. Step 6: Final answer
   x = 306,967.35