Finding the Third Proportional to 42,298 and 61,447.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,298 : 61,447.50 = 61,447.50 : x
2. Step 2: Convert to fraction form
   42,298/61,447.50 = 61,447.50/x
3. Step 3: Cross multiply
   42,298x = 61,447.50 × 61,447.50
4. Step 4: Simplify right side
   42,298x = 3,775,795,256.25
5. Step 5: Solve for x
   x = 3,775,795,256.25/42,298
6. Step 6: Final answer
   x = 89,266.52