Finding the Third Proportional to 30,303.25 and 64,818.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,303.25 : 64,818.50 = 64,818.50 : x
2. Step 2: Convert to fraction form
   30,303.25/64,818.50 = 64,818.50/x
3. Step 3: Cross multiply
   30,303.25x = 64,818.50 × 64,818.50
4. Step 4: Simplify right side
   30,303.25x = 4,201,437,942.25
5. Step 5: Solve for x
   x = 4,201,437,942.25/30,303.25
6. Step 6: Final answer
   x = 138,646.45