Finding the Third Proportional to 186,928,870 and 406,773,866.50

Step by Step Solution

1. Step 1: Write the proportion equation
   186,928,870 : 406,773,866.50 = 406,773,866.50 : x
2. Step 2: Convert to fraction form
   186,928,870/406,773,866.50 = 406,773,866.50/x
3. Step 3: Cross multiply
   186,928,870x = 406,773,866.50 × 406,773,866.50
4. Step 4: Simplify right side
   186,928,870x = 165,464,978,467,359,808
5. Step 5: Solve for x
   x = 165,464,978,467,359,808/186,928,870
6. Step 6: Final answer
   x = 885,176,155.33