Finding the Third Proportional to 99,871.50 and 219,141

Step by Step Solution

1. Step 1: Write the proportion equation
   99,871.50 : 219,141 = 219,141 : x
2. Step 2: Convert to fraction form
   99,871.50/219,141 = 219,141/x
3. Step 3: Cross multiply
   99,871.50x = 219,141 × 219,141
4. Step 4: Simplify right side
   99,871.50x = 48,022,777,881
5. Step 5: Solve for x
   x = 48,022,777,881/99,871.50
6. Step 6: Final answer
   x = 480,845.67