Finding the Third Proportional to 101,780.25 and 215,043

Step by Step Solution

1. Step 1: Write the proportion equation
   101,780.25 : 215,043 = 215,043 : x
2. Step 2: Convert to fraction form
   101,780.25/215,043 = 215,043/x
3. Step 3: Cross multiply
   101,780.25x = 215,043 × 215,043
4. Step 4: Simplify right side
   101,780.25x = 46,243,491,849
5. Step 5: Solve for x
   x = 46,243,491,849/101,780.25
6. Step 6: Final answer
   x = 454,346.42