Finding the Third Proportional to 61,422 and 86,458.50

Step by Step Solution

1. Step 1: Write the proportion equation
   61,422 : 86,458.50 = 86,458.50 : x
2. Step 2: Convert to fraction form
   61,422/86,458.50 = 86,458.50/x
3. Step 3: Cross multiply
   61,422x = 86,458.50 × 86,458.50
4. Step 4: Simplify right side
   61,422x = 7,475,072,222.25
5. Step 5: Solve for x
   x = 7,475,072,222.25/61,422
6. Step 6: Final answer
   x = 121,700.24