Finding the Third Proportional to 546,436,806 and 839,393,815.50

Step by Step Solution

1. Step 1: Write the proportion equation
   546,436,806 : 839,393,815.50 = 839,393,815.50 : x
2. Step 2: Convert to fraction form
   546,436,806/839,393,815.50 = 839,393,815.50/x
3. Step 3: Cross multiply
   546,436,806x = 839,393,815.50 × 839,393,815.50
4. Step 4: Simplify right side
   546,436,806x = 704,581,977,499,648,000
5. Step 5: Solve for x
   x = 704,581,977,499,648,000/546,436,806
6. Step 6: Final answer
   x = 1,289,411,638.75