Finding the Third Proportional to 83,163,970.50 and 129,282,136.50

Step by Step Solution

1. Step 1: Write the proportion equation
   83,163,970.50 : 129,282,136.50 = 129,282,136.50 : x
2. Step 2: Convert to fraction form
   83,163,970.50/129,282,136.50 = 129,282,136.50/x
3. Step 3: Cross multiply
   83,163,970.50x = 129,282,136.50 × 129,282,136.50
4. Step 4: Simplify right side
   83,163,970.50x = 16,713,870,818,004,632
5. Step 5: Solve for x
   x = 16,713,870,818,004,632/83,163,970.50
6. Step 6: Final answer
   x = 200,974,901.96