Finding the Third Proportional to 83,384,947.50 and 129,269,892

Step by Step Solution

1. Step 1: Write the proportion equation
   83,384,947.50 : 129,269,892 = 129,269,892 : x
2. Step 2: Convert to fraction form
   83,384,947.50/129,269,892 = 129,269,892/x
3. Step 3: Cross multiply
   83,384,947.50x = 129,269,892 × 129,269,892
4. Step 4: Simplify right side
   83,384,947.50x = 16,710,704,977,691,664
5. Step 5: Solve for x
   x = 16,710,704,977,691,664/83,384,947.50
6. Step 6: Final answer
   x = 200,404,335.30