Finding the Third Proportional to 30,202.88 and 64,779.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,202.88 : 64,779.75 = 64,779.75 : x
2. Step 2: Convert to fraction form
   30,202.88/64,779.75 = 64,779.75/x
3. Step 3: Cross multiply
   30,202.88x = 64,779.75 × 64,779.75
4. Step 4: Simplify right side
   30,202.88x = 4,196,416,010.06
5. Step 5: Solve for x
   x = 4,196,416,010.06/30,202.88
6. Step 6: Final answer
   x = 138,940.95