Finding the Third Proportional to 56,553,815.25 and 86,475,574.69

Step by Step Solution

1. Step 1: Write the proportion equation
   56,553,815.25 : 86,475,574.69 = 86,475,574.69 : x
2. Step 2: Convert to fraction form
   56,553,815.25/86,475,574.69 = 86,475,574.69/x
3. Step 3: Cross multiply
   56,553,815.25x = 86,475,574.69 × 86,475,574.69
4. Step 4: Simplify right side
   56,553,815.25x = 7,478,025,017,533,391
5. Step 5: Solve for x
   x = 7,478,025,017,533,391/56,553,815.25
6. Step 6: Final answer
   x = 132,228,479.80