Finding the Third Proportional to 31,410,290 and 66,442,144

Step by Step Solution

1. Step 1: Write the proportion equation
   31,410,290 : 66,442,144 = 66,442,144 : x
2. Step 2: Convert to fraction form
   31,410,290/66,442,144 = 66,442,144/x
3. Step 3: Cross multiply
   31,410,290x = 66,442,144 × 66,442,144
4. Step 4: Simplify right side
   31,410,290x = 4,414,558,499,316,736
5. Step 5: Solve for x
   x = 4,414,558,499,316,736/31,410,290
6. Step 6: Final answer
   x = 140,544,977.44