Finding the Third Proportional to 30,288.50 and 70,748.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,288.50 : 70,748.75 = 70,748.75 : x
2. Step 2: Convert to fraction form
   30,288.50/70,748.75 = 70,748.75/x
3. Step 3: Cross multiply
   30,288.50x = 70,748.75 × 70,748.75
4. Step 4: Simplify right side
   30,288.50x = 5,005,385,626.56
5. Step 5: Solve for x
   x = 5,005,385,626.56/30,288.50
6. Step 6: Final answer
   x = 165,256.97