Finding the Third Proportional to 55,149,870 and 87,286,950

Step by Step Solution

1. Step 1: Write the proportion equation
   55,149,870 : 87,286,950 = 87,286,950 : x
2. Step 2: Convert to fraction form
   55,149,870/87,286,950 = 87,286,950/x
3. Step 3: Cross multiply
   55,149,870x = 87,286,950 × 87,286,950
4. Step 4: Simplify right side
   55,149,870x = 7,619,011,640,302,500
5. Step 5: Solve for x
   x = 7,619,011,640,302,500/55,149,870
6. Step 6: Final answer
   x = 138,151,035.36