Finding the Third Proportional to 71,308 and 109,615

Step by Step Solution

1. Step 1: Write the proportion equation
   71,308 : 109,615 = 109,615 : x
2. Step 2: Convert to fraction form
   71,308/109,615 = 109,615/x
3. Step 3: Cross multiply
   71,308x = 109,615 × 109,615
4. Step 4: Simplify right side
   71,308x = 12,015,448,225
5. Step 5: Solve for x
   x = 12,015,448,225/71,308
6. Step 6: Final answer
   x = 168,500.70