Finding the Third Proportional to 30,288 and 70,387.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,288 : 70,387.50 = 70,387.50 : x
2. Step 2: Convert to fraction form
   30,288/70,387.50 = 70,387.50/x
3. Step 3: Cross multiply
   30,288x = 70,387.50 × 70,387.50
4. Step 4: Simplify right side
   30,288x = 4,954,400,156.25
5. Step 5: Solve for x
   x = 4,954,400,156.25/30,288
6. Step 6: Final answer
   x = 163,576.34