Finding the Third Proportional to 664,683,304.50 and 1,538,621,572.50

Step by Step Solution

1. Step 1: Write the proportion equation
   664,683,304.50 : 1,538,621,572.50 = 1,538,621,572.50 : x
2. Step 2: Convert to fraction form
   664,683,304.50/1,538,621,572.50 = 1,538,621,572.50/x
3. Step 3: Cross multiply
   664,683,304.50x = 1,538,621,572.50 × 1,538,621,572.50
4. Step 4: Simplify right side
   664,683,304.50x = 2,367,356,343,362,372,608
5. Step 5: Solve for x
   x = 2,367,356,343,362,372,608/664,683,304.50
6. Step 6: Final answer
   x = 3,561,630,519.88