Finding the Third Proportional to 186,986.50 and 402,485

Step by Step Solution

1. Step 1: Write the proportion equation
   186,986.50 : 402,485 = 402,485 : x
2. Step 2: Convert to fraction form
   186,986.50/402,485 = 402,485/x
3. Step 3: Cross multiply
   186,986.50x = 402,485 × 402,485
4. Step 4: Simplify right side
   186,986.50x = 161,994,175,225
5. Step 5: Solve for x
   x = 161,994,175,225/186,986.50
6. Step 6: Final answer
   x = 866,341.56