Finding the Third Proportional to 61,719.19 and 80,622.56

Step by Step Solution

1. Step 1: Write the proportion equation
   61,719.19 : 80,622.56 = 80,622.56 : x
2. Step 2: Convert to fraction form
   61,719.19/80,622.56 = 80,622.56/x
3. Step 3: Cross multiply
   61,719.19x = 80,622.56 × 80,622.56
4. Step 4: Simplify right side
   61,719.19x = 6,499,997,584.07
5. Step 5: Solve for x
   x = 6,499,997,584.07/61,719.19
6. Step 6: Final answer
   x = 105,315.67