Finding the Third Proportional to 137,110.50 and 305,730

Step by Step Solution

1. Step 1: Write the proportion equation
   137,110.50 : 305,730 = 305,730 : x
2. Step 2: Convert to fraction form
   137,110.50/305,730 = 305,730/x
3. Step 3: Cross multiply
   137,110.50x = 305,730 × 305,730
4. Step 4: Simplify right side
   137,110.50x = 93,470,832,900
5. Step 5: Solve for x
   x = 93,470,832,900/137,110.50
6. Step 6: Final answer
   x = 681,719.00