Finding the Third Proportional to 45,886.78 and 64,619.72

Step by Step Solution

1. Step 1: Write the proportion equation
   45,886.78 : 64,619.72 = 64,619.72 : x
2. Step 2: Convert to fraction form
   45,886.78/64,619.72 = 64,619.72/x
3. Step 3: Cross multiply
   45,886.78x = 64,619.72 × 64,619.72
4. Step 4: Simplify right side
   45,886.78x = 4,175,708,051.33
5. Step 5: Solve for x
   x = 4,175,708,051.33/45,886.78
6. Step 6: Final answer
   x = 91,000.24