Finding the Third Proportional to 56,903 and 86,141

Step by Step Solution

1. Step 1: Write the proportion equation
   56,903 : 86,141 = 86,141 : x
2. Step 2: Convert to fraction form
   56,903/86,141 = 86,141/x
3. Step 3: Cross multiply
   56,903x = 86,141 × 86,141
4. Step 4: Simplify right side
   56,903x = 7,420,271,881
5. Step 5: Solve for x
   x = 7,420,271,881/56,903
6. Step 6: Final answer
   x = 130,402.12