Finding the Third Proportional to 699,943,638 and 1,499,724,672

Step by Step Solution

1. Step 1: Write the proportion equation
   699,943,638 : 1,499,724,672 = 1,499,724,672 : x
2. Step 2: Convert to fraction form
   699,943,638/1,499,724,672 = 1,499,724,672/x
3. Step 3: Cross multiply
   699,943,638x = 1,499,724,672 × 1,499,724,672
4. Step 4: Simplify right side
   699,943,638x = 2,249,174,091,805,507,584
5. Step 5: Solve for x
   x = 2,249,174,091,805,507,584/699,943,638
6. Step 6: Final answer
   x = 3,213,364,576.37