Finding the Third Proportional to 86,426 and 187,606

Step by Step Solution

1. Step 1: Write the proportion equation
   86,426 : 187,606 = 187,606 : x
2. Step 2: Convert to fraction form
   86,426/187,606 = 187,606/x
3. Step 3: Cross multiply
   86,426x = 187,606 × 187,606
4. Step 4: Simplify right side
   86,426x = 35,196,011,236
5. Step 5: Solve for x
   x = 35,196,011,236/86,426
6. Step 6: Final answer
   x = 407,238.69