Finding the Third Proportional to 58,021.50 and 78,284.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,021.50 : 78,284.50 = 78,284.50 : x
2. Step 2: Convert to fraction form
   58,021.50/78,284.50 = 78,284.50/x
3. Step 3: Cross multiply
   58,021.50x = 78,284.50 × 78,284.50
4. Step 4: Simplify right side
   58,021.50x = 6,128,462,940.25
5. Step 5: Solve for x
   x = 6,128,462,940.25/58,021.50
6. Step 6: Final answer
   x = 105,624.00