Finding the Third Proportional to 186,979.50 and 407,799

Step by Step Solution

1. Step 1: Write the proportion equation
   186,979.50 : 407,799 = 407,799 : x
2. Step 2: Convert to fraction form
   186,979.50/407,799 = 407,799/x
3. Step 3: Cross multiply
   186,979.50x = 407,799 × 407,799
4. Step 4: Simplify right side
   186,979.50x = 166,300,024,401
5. Step 5: Solve for x
   x = 166,300,024,401/186,979.50
6. Step 6: Final answer
   x = 889,402.44