Finding the Third Proportional to 99,700 and 215,054

Step by Step Solution

1. Step 1: Write the proportion equation
   99,700 : 215,054 = 215,054 : x
2. Step 2: Convert to fraction form
   99,700/215,054 = 215,054/x
3. Step 3: Cross multiply
   99,700x = 215,054 × 215,054
4. Step 4: Simplify right side
   99,700x = 46,248,222,916
5. Step 5: Solve for x
   x = 46,248,222,916/99,700
6. Step 6: Final answer
   x = 463,873.85