Finding the Third Proportional to 99,848 and 213,736

Step by Step Solution

1. Step 1: Write the proportion equation
   99,848 : 213,736 = 213,736 : x
2. Step 2: Convert to fraction form
   99,848/213,736 = 213,736/x
3. Step 3: Cross multiply
   99,848x = 213,736 × 213,736
4. Step 4: Simplify right side
   99,848x = 45,683,077,696
5. Step 5: Solve for x
   x = 45,683,077,696/99,848
6. Step 6: Final answer
   x = 457,526.22