Finding the Third Proportional to 172,272,338 and 264,795,040

Step by Step Solution

1. Step 1: Write the proportion equation
   172,272,338 : 264,795,040 = 264,795,040 : x
2. Step 2: Convert to fraction form
   172,272,338/264,795,040 = 264,795,040/x
3. Step 3: Cross multiply
   172,272,338x = 264,795,040 × 264,795,040
4. Step 4: Simplify right side
   172,272,338x = 70,116,413,208,601,600
5. Step 5: Solve for x
   x = 70,116,413,208,601,600/172,272,338
6. Step 6: Final answer
   x = 407,009,123.01