Finding the Third Proportional to 212,412,159 and 328,051,498.50

Step by Step Solution

1. Step 1: Write the proportion equation
   212,412,159 : 328,051,498.50 = 328,051,498.50 : x
2. Step 2: Convert to fraction form
   212,412,159/328,051,498.50 = 328,051,498.50/x
3. Step 3: Cross multiply
   212,412,159x = 328,051,498.50 × 328,051,498.50
4. Step 4: Simplify right side
   212,412,159x = 107,617,785,668,095,504
5. Step 5: Solve for x
   x = 107,617,785,668,095,504/212,412,159
6. Step 6: Final answer
   x = 506,646,070.43