Finding the Third Proportional to 99,916 and 209,064

Step by Step Solution

1. Step 1: Write the proportion equation
   99,916 : 209,064 = 209,064 : x
2. Step 2: Convert to fraction form
   99,916/209,064 = 209,064/x
3. Step 3: Cross multiply
   99,916x = 209,064 × 209,064
4. Step 4: Simplify right side
   99,916x = 43,707,756,096
5. Step 5: Solve for x
   x = 43,707,756,096/99,916
6. Step 6: Final answer
   x = 437,445.01