Finding the Third Proportional to 56,445.19 and 87,447.09

Step by Step Solution

1. Step 1: Write the proportion equation
   56,445.19 : 87,447.09 = 87,447.09 : x
2. Step 2: Convert to fraction form
   56,445.19/87,447.09 = 87,447.09/x
3. Step 3: Cross multiply
   56,445.19x = 87,447.09 × 87,447.09
4. Step 4: Simplify right side
   56,445.19x = 7,646,994,205.32
5. Step 5: Solve for x
   x = 7,646,994,205.32/56,445.19
6. Step 6: Final answer
   x = 135,476.46