Finding the Third Proportional to 99,720 and 215,094

Step by Step Solution

1. Step 1: Write the proportion equation
   99,720 : 215,094 = 215,094 : x
2. Step 2: Convert to fraction form
   99,720/215,094 = 215,094/x
3. Step 3: Cross multiply
   99,720x = 215,094 × 215,094
4. Step 4: Simplify right side
   99,720x = 46,265,428,836
5. Step 5: Solve for x
   x = 46,265,428,836/99,720
6. Step 6: Final answer
   x = 463,953.36