Finding the Third Proportional to 58,689,224 and 128,715,856

Step by Step Solution

1. Step 1: Write the proportion equation
   58,689,224 : 128,715,856 = 128,715,856 : x
2. Step 2: Convert to fraction form
   58,689,224/128,715,856 = 128,715,856/x
3. Step 3: Cross multiply
   58,689,224x = 128,715,856 × 128,715,856
4. Step 4: Simplify right side
   58,689,224x = 16,567,771,585,812,736
5. Step 5: Solve for x
   x = 16,567,771,585,812,736/58,689,224
6. Step 6: Final answer
   x = 282,296,654.42