Finding the Third Proportional to 61,155 and 90,598.50

Step by Step Solution

1. Step 1: Write the proportion equation
   61,155 : 90,598.50 = 90,598.50 : x
2. Step 2: Convert to fraction form
   61,155/90,598.50 = 90,598.50/x
3. Step 3: Cross multiply
   61,155x = 90,598.50 × 90,598.50
4. Step 4: Simplify right side
   61,155x = 8,208,088,202.25
5. Step 5: Solve for x
   x = 8,208,088,202.25/61,155
6. Step 6: Final answer
   x = 134,217.78