Finding the Third Proportional to 98,885.81 and 216,381.38

Step by Step Solution

1. Step 1: Write the proportion equation
   98,885.81 : 216,381.38 = 216,381.38 : x
2. Step 2: Convert to fraction form
   98,885.81/216,381.38 = 216,381.38/x
3. Step 3: Cross multiply
   98,885.81x = 216,381.38 × 216,381.38
4. Step 4: Simplify right side
   98,885.81x = 46,820,899,446.89
5. Step 5: Solve for x
   x = 46,820,899,446.89/98,885.81
6. Step 6: Final answer
   x = 473,484.50