Finding the Third Proportional to 43,212 and 64,858.50

Step by Step Solution

1. Step 1: Write the proportion equation
   43,212 : 64,858.50 = 64,858.50 : x
2. Step 2: Convert to fraction form
   43,212/64,858.50 = 64,858.50/x
3. Step 3: Cross multiply
   43,212x = 64,858.50 × 64,858.50
4. Step 4: Simplify right side
   43,212x = 4,206,625,022.25
5. Step 5: Solve for x
   x = 4,206,625,022.25/43,212
6. Step 6: Final answer
   x = 97,348.54