Finding the Third Proportional to 81,942,900.75 and 171,462,116.25

Step by Step Solution

1. Step 1: Write the proportion equation
   81,942,900.75 : 171,462,116.25 = 171,462,116.25 : x
2. Step 2: Convert to fraction form
   81,942,900.75/171,462,116.25 = 171,462,116.25/x
3. Step 3: Cross multiply
   81,942,900.75x = 171,462,116.25 × 171,462,116.25
4. Step 4: Simplify right side
   81,942,900.75x = 29,399,257,308,928,516
5. Step 5: Solve for x
   x = 29,399,257,308,928,516/81,942,900.75
6. Step 6: Final answer
   x = 358,777,356.43