Finding the Third Proportional to 81,628,406 and 177,605,152

Step by Step Solution

1. Step 1: Write the proportion equation
   81,628,406 : 177,605,152 = 177,605,152 : x
2. Step 2: Convert to fraction form
   81,628,406/177,605,152 = 177,605,152/x
3. Step 3: Cross multiply
   81,628,406x = 177,605,152 × 177,605,152
4. Step 4: Simplify right side
   81,628,406x = 31,543,590,016,943,104
5. Step 5: Solve for x
   x = 31,543,590,016,943,104/81,628,406
6. Step 6: Final answer
   x = 386,429,082.26