Finding the Third Proportional to 99,601 and 215,047

Step by Step Solution

1. Step 1: Write the proportion equation
   99,601 : 215,047 = 215,047 : x
2. Step 2: Convert to fraction form
   99,601/215,047 = 215,047/x
3. Step 3: Cross multiply
   99,601x = 215,047 × 215,047
4. Step 4: Simplify right side
   99,601x = 46,245,212,209
5. Step 5: Solve for x
   x = 46,245,212,209/99,601
6. Step 6: Final answer
   x = 464,304.70