Finding the Third Proportional to 30,991.50 and 63,615

Step by Step Solution

1. Step 1: Write the proportion equation
   30,991.50 : 63,615 = 63,615 : x
2. Step 2: Convert to fraction form
   30,991.50/63,615 = 63,615/x
3. Step 3: Cross multiply
   30,991.50x = 63,615 × 63,615
4. Step 4: Simplify right side
   30,991.50x = 4,046,868,225
5. Step 5: Solve for x
   x = 4,046,868,225/30,991.50
6. Step 6: Final answer
   x = 130,579.94