Finding the Third Proportional to 10,665.90 and 15,613.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,665.90 : 15,613.34 = 15,613.34 : x
2. Step 2: Convert to fraction form
   10,665.90/15,613.34 = 15,613.34/x
3. Step 3: Cross multiply
   10,665.90x = 15,613.34 × 15,613.34
4. Step 4: Simplify right side
   10,665.90x = 243,776,487.81
5. Step 5: Solve for x
   x = 243,776,487.81/10,665.90
6. Step 6: Final answer
   x = 22,855.70