Finding the Third Proportional to 85,466,172 and 173,952,772

Step by Step Solution

1. Step 1: Write the proportion equation
   85,466,172 : 173,952,772 = 173,952,772 : x
2. Step 2: Convert to fraction form
   85,466,172/173,952,772 = 173,952,772/x
3. Step 3: Cross multiply
   85,466,172x = 173,952,772 × 173,952,772
4. Step 4: Simplify right side
   85,466,172x = 30,259,566,886,483,984
5. Step 5: Solve for x
   x = 30,259,566,886,483,984/85,466,172
6. Step 6: Final answer
   x = 354,053,143.82