Finding the Third Proportional to 98,676.50 and 213,138

Step by Step Solution

1. Step 1: Write the proportion equation
   98,676.50 : 213,138 = 213,138 : x
2. Step 2: Convert to fraction form
   98,676.50/213,138 = 213,138/x
3. Step 3: Cross multiply
   98,676.50x = 213,138 × 213,138
4. Step 4: Simplify right side
   98,676.50x = 45,427,807,044
5. Step 5: Solve for x
   x = 45,427,807,044/98,676.50
6. Step 6: Final answer
   x = 460,371.08