Finding the Third Proportional to 445,671,609.89 and 977,436,661.78

Step by Step Solution

1. Step 1: Write the proportion equation
   445,671,609.89 : 977,436,661.78 = 977,436,661.78 : x
2. Step 2: Convert to fraction form
   445,671,609.89/977,436,661.78 = 977,436,661.78/x
3. Step 3: Cross multiply
   445,671,609.89x = 977,436,661.78 × 977,436,661.78
4. Step 4: Simplify right side
   445,671,609.89x = 955,382,427,794,054,144
5. Step 5: Solve for x
   x = 955,382,427,794,054,144/445,671,609.89
6. Step 6: Final answer
   x = 2,143,691,468.32