Finding the Third Proportional to 145,111,982 and 315,732,673

Step by Step Solution

1. Step 1: Write the proportion equation
   145,111,982 : 315,732,673 = 315,732,673 : x
2. Step 2: Convert to fraction form
   145,111,982/315,732,673 = 315,732,673/x
3. Step 3: Cross multiply
   145,111,982x = 315,732,673 × 315,732,673
4. Step 4: Simplify right side
   145,111,982x = 99,687,120,799,724,928
5. Step 5: Solve for x
   x = 99,687,120,799,724,928/145,111,982
6. Step 6: Final answer
   x = 686,966,847.44