Finding the Third Proportional to 56,838 and 89,161.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,838 : 89,161.50 = 89,161.50 : x
2. Step 2: Convert to fraction form
   56,838/89,161.50 = 89,161.50/x
3. Step 3: Cross multiply
   56,838x = 89,161.50 × 89,161.50
4. Step 4: Simplify right side
   56,838x = 7,949,773,082.25
5. Step 5: Solve for x
   x = 7,949,773,082.25/56,838
6. Step 6: Final answer
   x = 139,867.22