Finding the Third Proportional to 59,982 and 138,859.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,982 : 138,859.50 = 138,859.50 : x
2. Step 2: Convert to fraction form
   59,982/138,859.50 = 138,859.50/x
3. Step 3: Cross multiply
   59,982x = 138,859.50 × 138,859.50
4. Step 4: Simplify right side
   59,982x = 19,281,960,740.25
5. Step 5: Solve for x
   x = 19,281,960,740.25/59,982
6. Step 6: Final answer
   x = 321,462.45