Finding the Third Proportional to 56,364.19 and 84,390.75

Step by Step Solution

1. Step 1: Write the proportion equation
   56,364.19 : 84,390.75 = 84,390.75 : x
2. Step 2: Convert to fraction form
   56,364.19/84,390.75 = 84,390.75/x
3. Step 3: Cross multiply
   56,364.19x = 84,390.75 × 84,390.75
4. Step 4: Simplify right side
   56,364.19x = 7,121,798,685.56
5. Step 5: Solve for x
   x = 7,121,798,685.56/56,364.19
6. Step 6: Final answer
   x = 126,353.26