Finding the Third Proportional to 99,210 and 234,155

Step by Step Solution

1. Step 1: Write the proportion equation
   99,210 : 234,155 = 234,155 : x
2. Step 2: Convert to fraction form
   99,210/234,155 = 234,155/x
3. Step 3: Cross multiply
   99,210x = 234,155 × 234,155
4. Step 4: Simplify right side
   99,210x = 54,828,564,025
5. Step 5: Solve for x
   x = 54,828,564,025/99,210
6. Step 6: Final answer
   x = 552,651.59