Finding the Third Proportional to 81,858,870 and 176,104,908

Step by Step Solution

1. Step 1: Write the proportion equation
   81,858,870 : 176,104,908 = 176,104,908 : x
2. Step 2: Convert to fraction form
   81,858,870/176,104,908 = 176,104,908/x
3. Step 3: Cross multiply
   81,858,870x = 176,104,908 × 176,104,908
4. Step 4: Simplify right side
   81,858,870x = 31,012,938,621,688,464
5. Step 5: Solve for x
   x = 31,012,938,621,688,464/81,858,870
6. Step 6: Final answer
   x = 378,858,621.21