Finding the Third Proportional to 26,890.50 and 58,699.50

Step by Step Solution

1. Step 1: Write the proportion equation
   26,890.50 : 58,699.50 = 58,699.50 : x
2. Step 2: Convert to fraction form
   26,890.50/58,699.50 = 58,699.50/x
3. Step 3: Cross multiply
   26,890.50x = 58,699.50 × 58,699.50
4. Step 4: Simplify right side
   26,890.50x = 3,445,631,300.25
5. Step 5: Solve for x
   x = 3,445,631,300.25/26,890.50
6. Step 6: Final answer
   x = 128,135.64