Finding the Third Proportional to 190,039.50 and 415,719

Step by Step Solution

1. Step 1: Write the proportion equation
   190,039.50 : 415,719 = 415,719 : x
2. Step 2: Convert to fraction form
   190,039.50/415,719 = 415,719/x
3. Step 3: Cross multiply
   190,039.50x = 415,719 × 415,719
4. Step 4: Simplify right side
   190,039.50x = 172,822,286,961
5. Step 5: Solve for x
   x = 172,822,286,961/190,039.50
6. Step 6: Final answer
   x = 909,401.92