Finding the Third Proportional to 81,870,681 and 177,555,030

Step by Step Solution

1. Step 1: Write the proportion equation
   81,870,681 : 177,555,030 = 177,555,030 : x
2. Step 2: Convert to fraction form
   81,870,681/177,555,030 = 177,555,030/x
3. Step 3: Cross multiply
   81,870,681x = 177,555,030 × 177,555,030
4. Step 4: Simplify right side
   81,870,681x = 31,525,788,678,300,900
5. Step 5: Solve for x
   x = 31,525,788,678,300,900/81,870,681
6. Step 6: Final answer
   x = 385,068,113.43