Finding the Third Proportional to 86,064.19 and 186,426.56

Step by Step Solution

1. Step 1: Write the proportion equation
   86,064.19 : 186,426.56 = 186,426.56 : x
2. Step 2: Convert to fraction form
   86,064.19/186,426.56 = 186,426.56/x
3. Step 3: Cross multiply
   86,064.19x = 186,426.56 × 186,426.56
4. Step 4: Simplify right side
   86,064.19x = 34,754,863,205.57
5. Step 5: Solve for x
   x = 34,754,863,205.57/86,064.19
6. Step 6: Final answer
   x = 403,824.92