Finding the Third Proportional to 56,903 and 89,251.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,903 : 89,251.50 = 89,251.50 : x
2. Step 2: Convert to fraction form
   56,903/89,251.50 = 89,251.50/x
3. Step 3: Cross multiply
   56,903x = 89,251.50 × 89,251.50
4. Step 4: Simplify right side
   56,903x = 7,965,830,252.25
5. Step 5: Solve for x
   x = 7,965,830,252.25/56,903
6. Step 6: Final answer
   x = 139,989.64