Finding the Third Proportional to 123,096,987 and 266,621,211

Step by Step Solution

1. Step 1: Write the proportion equation
   123,096,987 : 266,621,211 = 266,621,211 : x
2. Step 2: Convert to fraction form
   123,096,987/266,621,211 = 266,621,211/x
3. Step 3: Cross multiply
   123,096,987x = 266,621,211 × 266,621,211
4. Step 4: Simplify right side
   123,096,987x = 71,086,870,155,106,520
5. Step 5: Solve for x
   x = 71,086,870,155,106,520/123,096,987
6. Step 6: Final answer
   x = 577,486,678.49