Finding the Third Proportional to 45,900.75 and 64,636.50

Step by Step Solution

1. Step 1: Write the proportion equation
   45,900.75 : 64,636.50 = 64,636.50 : x
2. Step 2: Convert to fraction form
   45,900.75/64,636.50 = 64,636.50/x
3. Step 3: Cross multiply
   45,900.75x = 64,636.50 × 64,636.50
4. Step 4: Simplify right side
   45,900.75x = 4,177,877,132.25
5. Step 5: Solve for x
   x = 4,177,877,132.25/45,900.75
6. Step 6: Final answer
   x = 91,019.80