Finding the Third Proportional to 172,272,316.50 and 264,795,007.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,272,316.50 : 264,795,007.50 = 264,795,007.50 : x
2. Step 2: Convert to fraction form
   172,272,316.50/264,795,007.50 = 264,795,007.50/x
3. Step 3: Cross multiply
   172,272,316.50x = 264,795,007.50 × 264,795,007.50
4. Step 4: Simplify right side
   172,272,316.50x = 70,116,395,996,925,056
5. Step 5: Solve for x
   x = 70,116,395,996,925,056/172,272,316.50
6. Step 6: Final answer
   x = 407,009,073.90