Finding the Third Proportional to 121,139,025 and 266,501,262

Step by Step Solution

1. Step 1: Write the proportion equation
   121,139,025 : 266,501,262 = 266,501,262 : x
2. Step 2: Convert to fraction form
   121,139,025/266,501,262 = 266,501,262/x
3. Step 3: Cross multiply
   121,139,025x = 266,501,262 × 266,501,262
4. Step 4: Simplify right side
   121,139,025x = 71,022,922,647,592,640
5. Step 5: Solve for x
   x = 71,022,922,647,592,640/121,139,025
6. Step 6: Final answer
   x = 586,292,671.97