Finding the Third Proportional to 245,866.50 and 379,719

Step by Step Solution

1. Step 1: Write the proportion equation
   245,866.50 : 379,719 = 379,719 : x
2. Step 2: Convert to fraction form
   245,866.50/379,719 = 379,719/x
3. Step 3: Cross multiply
   245,866.50x = 379,719 × 379,719
4. Step 4: Simplify right side
   245,866.50x = 144,186,518,961
5. Step 5: Solve for x
   x = 144,186,518,961/245,866.50
6. Step 6: Final answer
   x = 586,442.31