Finding the Third Proportional to 42,015 and 58,810.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,015 : 58,810.50 = 58,810.50 : x
2. Step 2: Convert to fraction form
   42,015/58,810.50 = 58,810.50/x
3. Step 3: Cross multiply
   42,015x = 58,810.50 × 58,810.50
4. Step 4: Simplify right side
   42,015x = 3,458,674,910.25
5. Step 5: Solve for x
   x = 3,458,674,910.25/42,015
6. Step 6: Final answer
   x = 82,320.00