Finding the Third Proportional to 56,631 and 85,828.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,631 : 85,828.50 = 85,828.50 : x
2. Step 2: Convert to fraction form
   56,631/85,828.50 = 85,828.50/x
3. Step 3: Cross multiply
   56,631x = 85,828.50 × 85,828.50
4. Step 4: Simplify right side
   56,631x = 7,366,531,412.25
5. Step 5: Solve for x
   x = 7,366,531,412.25/56,631
6. Step 6: Final answer
   x = 130,079.49