Finding the Third Proportional to 172,272,320 and 264,795,012.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,272,320 : 264,795,012.50 = 264,795,012.50 : x
2. Step 2: Convert to fraction form
   172,272,320/264,795,012.50 = 264,795,012.50/x
3. Step 3: Cross multiply
   172,272,320x = 264,795,012.50 × 264,795,012.50
4. Step 4: Simplify right side
   172,272,320x = 70,116,398,644,875,160
5. Step 5: Solve for x
   x = 70,116,398,644,875,160/172,272,320
6. Step 6: Final answer
   x = 407,009,081.00