Finding the Third Proportional to 40,388,684 and 86,935,960

Step by Step Solution

1. Step 1: Write the proportion equation
   40,388,684 : 86,935,960 = 86,935,960 : x
2. Step 2: Convert to fraction form
   40,388,684/86,935,960 = 86,935,960/x
3. Step 3: Cross multiply
   40,388,684x = 86,935,960 × 86,935,960
4. Step 4: Simplify right side
   40,388,684x = 7,557,861,141,121,600
5. Step 5: Solve for x
   x = 7,557,861,141,121,600/40,388,684
6. Step 6: Final answer
   x = 187,128,185.24