Finding the Third Proportional to 72,175,291 and 170,320,769.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,175,291 : 170,320,769.50 = 170,320,769.50 : x
2. Step 2: Convert to fraction form
   72,175,291/170,320,769.50 = 170,320,769.50/x
3. Step 3: Cross multiply
   72,175,291x = 170,320,769.50 × 170,320,769.50
4. Step 4: Simplify right side
   72,175,291x = 29,009,164,523,072,132
5. Step 5: Solve for x
   x = 29,009,164,523,072,132/72,175,291
6. Step 6: Final answer
   x = 401,926,533.60