Finding the Third Proportional to 56,308 and 84,690

Step by Step Solution

1. Step 1: Write the proportion equation
   56,308 : 84,690 = 84,690 : x
2. Step 2: Convert to fraction form
   56,308/84,690 = 84,690/x
3. Step 3: Cross multiply
   56,308x = 84,690 × 84,690
4. Step 4: Simplify right side
   56,308x = 7,172,396,100
5. Step 5: Solve for x
   x = 7,172,396,100/56,308
6. Step 6: Final answer
   x = 127,377.92