Finding the Third Proportional to 98,619.50 and 215,896

Step by Step Solution

1. Step 1: Write the proportion equation
   98,619.50 : 215,896 = 215,896 : x
2. Step 2: Convert to fraction form
   98,619.50/215,896 = 215,896/x
3. Step 3: Cross multiply
   98,619.50x = 215,896 × 215,896
4. Step 4: Simplify right side
   98,619.50x = 46,611,082,816
5. Step 5: Solve for x
   x = 46,611,082,816/98,619.50
6. Step 6: Final answer
   x = 472,635.56