Finding the Third Proportional to 87,189,464 and 186,897,316

Step by Step Solution

1. Step 1: Write the proportion equation
   87,189,464 : 186,897,316 = 186,897,316 : x
2. Step 2: Convert to fraction form
   87,189,464/186,897,316 = 186,897,316/x
3. Step 3: Cross multiply
   87,189,464x = 186,897,316 × 186,897,316
4. Step 4: Simplify right side
   87,189,464x = 34,930,606,728,003,856
5. Step 5: Solve for x
   x = 34,930,606,728,003,856/87,189,464
6. Step 6: Final answer
   x = 400,628,758.63