Finding the Third Proportional to 118,870,164.50 and 258,843,306.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,870,164.50 : 258,843,306.50 = 258,843,306.50 : x
2. Step 2: Convert to fraction form
   118,870,164.50/258,843,306.50 = 258,843,306.50/x
3. Step 3: Cross multiply
   118,870,164.50x = 258,843,306.50 × 258,843,306.50
4. Step 4: Simplify right side
   118,870,164.50x = 66,999,857,319,852,944
5. Step 5: Solve for x
   x = 66,999,857,319,852,944/118,870,164.50
6. Step 6: Final answer
   x = 563,638,972.00