Finding the Third Proportional to 43,431,507 and 90,435,510

Step by Step Solution

1. Step 1: Write the proportion equation
   43,431,507 : 90,435,510 = 90,435,510 : x
2. Step 2: Convert to fraction form
   43,431,507/90,435,510 = 90,435,510/x
3. Step 3: Cross multiply
   43,431,507x = 90,435,510 × 90,435,510
4. Step 4: Simplify right side
   43,431,507x = 8,178,581,468,960,100
5. Step 5: Solve for x
   x = 8,178,581,468,960,100/43,431,507
6. Step 6: Final answer
   x = 188,309,870.73