Finding the Third Proportional to 187,677 and 390,885.75

Step by Step Solution

1. Step 1: Write the proportion equation
   187,677 : 390,885.75 = 390,885.75 : x
2. Step 2: Convert to fraction form
   187,677/390,885.75 = 390,885.75/x
3. Step 3: Cross multiply
   187,677x = 390,885.75 × 390,885.75
4. Step 4: Simplify right side
   187,677x = 152,791,669,553.06
5. Step 5: Solve for x
   x = 152,791,669,553.06/187,677
6. Step 6: Final answer
   x = 814,120.37