Finding the Third Proportional to 99,425 and 215,788

Step by Step Solution

1. Step 1: Write the proportion equation
   99,425 : 215,788 = 215,788 : x
2. Step 2: Convert to fraction form
   99,425/215,788 = 215,788/x
3. Step 3: Cross multiply
   99,425x = 215,788 × 215,788
4. Step 4: Simplify right side
   99,425x = 46,564,460,944
5. Step 5: Solve for x
   x = 46,564,460,944/99,425
6. Step 6: Final answer
   x = 468,337.55