Finding the Third Proportional to 83,384,973 and 129,269,932.50

Step by Step Solution

1. Step 1: Write the proportion equation
   83,384,973 : 129,269,932.50 = 129,269,932.50 : x
2. Step 2: Convert to fraction form
   83,384,973/129,269,932.50 = 129,269,932.50/x
3. Step 3: Cross multiply
   83,384,973x = 129,269,932.50 × 129,269,932.50
4. Step 4: Simplify right side
   83,384,973x = 16,710,715,448,554,556
5. Step 5: Solve for x
   x = 16,710,715,448,554,556/83,384,973
6. Step 6: Final answer
   x = 200,404,399.59